Check Point Advisories

Apache HTTP Server auth_ldap Logging Function Format String (CVE-2005-3656; CVE-2006-0150)

Check Point Reference: CPAI-2006-181
Date Published: 17 Aug 2010
Severity: High
Last Updated: Sunday 03 May, 2015
Source:
Industry Reference:CVE-2005-3656
CVE-2006-0150
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description There exists a format string vulnerability in the auth_ldap module used with Apache HTTP server. The vulnerability is a result of the failure to properly verify string arguments passed to a logging function, resulting in a memory corruption condition. A remote attacker can exploit this vulnerability to inject and execute arbitrary code with the privileges of the HTTP server process. In a simple attack exploiting this vulnerability, the httpd process serving the attacker terminates, closing the connection as a result. This might also reset other connections served by the affected httpd process, in the case the HTTP server is configured to run in multiple-threading mode. In the case of a more sophisticated attack, the injected arbitrary code is executed with the privileges of the httpd process. The behavior of the target system will be dependent on the malicious code.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Apache HTTP Server auth_ldap Logging Function Format String protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Apache Server Protection Violation.
Attack Information:  Apache HTTP Server auth_ldap logging function format string

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